Adjustable contactor

A method of assembling an adjustable contactor, wherein

• the contactor comprises static contacts, movable contacts, contact springs and a movable contact bracket;
• the static contact is fixed in the contactor;
• the movable contact is connected in the movable contact bracket through the contact spring, and makes contact with the static contact in accordance with the movement of the movable contact bracket in the contactor;
• the contactor further comprises adjusting knobs provided in the movable contact bracket at one end in connection with the contact spring while corresponding to the contact springs connected with individual movable contacts, and the adjusting knob is set so that adjustment of compression or release of the contact spring is achieved by rotating the adjusting knob so as to adjust a contact pressure of the movable contact;
• the method of assembling comprises:
• measuring an overtravel value of each contact spring and a bounce time value of each movable contact after pre-assembling of the contactor, and
• operating the adjusting knob so as to adjust a contact pressure of the contact spring, based on a measured value of the overtravel of each contact spring and a measured value of the bounce time of each movable contact to achieve the consistency among the contact springs of various electrodes;
• after the completion of operating the adjusting knob, re-measuring the bounce time value of each movable contact so as to obtain consistency among various contact springs;
• and
• testing the pull-in voltage threshold and the release voltage threshold, and fastening and integrating the contactor so as to obtain an assembled-contactor;
• before the measuring the overtravel value of each contact spring and the bounce time value of each movable contact, pre-assembling the contactor to allow the movable contact to contact the static contact by a detector, wherein the movable contact corresponds to the contact spring;
• releasing the contact spring that the movable contact corresponds to, so as to obtain the bounce time value and the contact pressure of the movable contact;
• and
• analyzing the bounce time of the movable contact by the detector, wherein, if the bounce time of the movable contact is greater than a design value, the detector controls the adjusting knob corresponding to the movable contact to rotate, and the contact pressure of the movable contact is adjusted by the detector according to rotation amount of the helical structure of the adjusting knob and a coefficient k of the contact spring.